diff --git a/src/java/com/threerings/jme/tools/CompileModel.java b/src/java/com/threerings/jme/tools/CompileModel.java
index 1cab53b8a..8e5536eaf 100644
--- a/src/java/com/threerings/jme/tools/CompileModel.java
+++ b/src/java/com/threerings/jme/tools/CompileModel.java
@@ -65,7 +65,7 @@ public class CompileModel
         String spath = source.toString();
         int didx = spath.lastIndexOf('.');
         String root = (didx == -1) ? spath : spath.substring(0, didx);
-        File content = new File(root + ".xml"),
+        File content = new File(root + ".mxml"),
             target = new File(root + ".dat");
         boolean needsUpdate = false;
         if (source.lastModified() >= target.lastModified() ||
@@ -85,7 +85,7 @@ public class CompileModel
         File[] afiles = new File[anims.length];
         File dir = source.getParentFile();
         for (int ii = 0; ii < anims.length; ii++) {
-            afiles[ii] = new File(dir, anims[ii] + ".xml");
+            afiles[ii] = new File(dir, anims[ii] + ".mxml");
             if (afiles[ii].lastModified() >= target.lastModified()) {
                 needsUpdate = true;
             }
diff --git a/src/java/com/threerings/jme/tools/ModelViewer.java b/src/java/com/threerings/jme/tools/ModelViewer.java
index 3b6f3c2a0..380e7d725 100644
--- a/src/java/com/threerings/jme/tools/ModelViewer.java
+++ b/src/java/com/threerings/jme/tools/ModelViewer.java
@@ -109,7 +109,7 @@ import com.threerings.jme.model.TextureProvider;
 /**
  * A simple viewer application that allows users to examine models and their
  * animations by loading them from their uncompiled <code>.properties</code> /
- * <code>.xml</code> representations or their compiled <code>.dat</code>
+ * <code>.mxml</code> representations or their compiled <code>.dat</code>
  * representations.
  */
 public class ModelViewer extends JmeCanvasApp
diff --git a/src/ms/TRAnimationExporter.mcr b/src/ms/TRAnimationExporter.mcr
index 4539c4b03..720777183 100644
--- a/src/ms/TRAnimationExporter.mcr
+++ b/src/ms/TRAnimationExporter.mcr
@@ -85,12 +85,12 @@ macroScript TRAnimationExporter category:"File" \
     persistent global xmlAnimFileName
     local fileName
     if (xmlAnimFileName == undefined) then (
-        fileName = maxFilePath + (getFilenameFile maxFileName) + ".xml"
+        fileName = maxFilePath + (getFilenameFile maxFileName) + ".mxml"
     ) else (
         fileName = xmlAnimFileName
     )
     fileName = getSaveFileName caption:"Select File to Export" \
-        filename:fileName types:"XML Animations (*.XML)|*.xml|All|*.*"
+        filename:fileName types:"XML Animations (*.MXML)|*.mxml|All|*.*"
     if fileName != undefined do (
         xmlAnimFileName = fileName
         writeAnimation fileName
diff --git a/src/ms/TRModelExporter.mcr b/src/ms/TRModelExporter.mcr
index f4b1bb480..f9b02e851 100644
--- a/src/ms/TRModelExporter.mcr
+++ b/src/ms/TRModelExporter.mcr
@@ -179,12 +179,12 @@ macroScript TRModelExporter category:"File" \
     persistent global xmlModelFileName
     local fileName
     if (xmlModelFileName == undefined) then (
-        fileName = maxFilePath + (getFilenameFile maxFileName) + ".xml"
+        fileName = maxFilePath + (getFilenameFile maxFileName) + ".mxml"
     ) else (
         fileName = xmlModelFileName
     )
     fileName = getSaveFileName caption:"Select File to Export" \
-        filename:fileName types:"XML Models (*.XML)|*.xml|All|*.*"
+        filename:fileName types:"XML Models (*.MXML)|*.mxml|All|*.*"
     if fileName != undefined do (
         xmlModelFileName = fileName
         writeModel fileName